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aDepartment of Neurology and Danish Pain Research Center, Aarhus University Hospital, DK-8000Aarhus, Denmark bDepartment of Neurology, Odense University Hospital, 5000Odense C, Denmark ∗Corresponding author. Tel.: +45-8949-3283; fax: +45-8949-3300 E-mail: email protected
Jensen et al. (Mon,) studied this question.